Thomas, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47 °F (low) to 71.4 °F (high). Annual precipitation averages 29.9 Inches. Thomas is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.1 °F | 48.8 °F | 0.93 in. |
| February | 27.8 °F | 52.2 °F | 1.25 in. |
| March | 36.3 °F | 61.8 °F | 2.31 in. |
| April | 44.7 °F | 70.5 °F | 3.06 in. |
| May | 55.4 °F | 79.6 °F | 3.79 in. |
| June | 65.4 °F | 88.9 °F | 3.87 in. |
| July | 69.6 °F | 94.4 °F | 2.52 in. |
| August | 68.1 °F | 93.2 °F | 3.47 in. |
| September | 60.6 °F | 85.1 °F | 2.77 in. |
| October | 47.8 °F | 72.8 °F | 2.93 in. |
| November | 36.0 °F | 60.4 °F | 1.54 in. |
| December | 26.9 °F | 49.4 °F | 1.43 in. |
| Annual | 47 °F | 71.4 °F | 29.87 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |